When Monitored and Set Condition

1. When Monitored: The Controller Antilock Brake (CAB) monitors the wheel speed circuit every 7 milliseconds (ms).
2. Set Condition: The Controller Antilock Brake (CAB) will set this DTC if the speed signal is missing or there is excessive time between signals.

POSSIBLE CAUSES
DEFECTIVE WHEEL SPEED SENSOR
MISSING SENSOR OR TONE WHEEL
EXCESSIVE AIR GAP

For a complete Antilock Brake System (ABS) Circuit Diagram (Refer to BRAKES/ELECTRICAL - SCHEMATICS AND DIAGRAMS) .

1. 1)   VISUALLY INSPECT COMPONENTS FOR DAMAGE AND CORRECT INSTALLATION

   Visually inspect the related wiring harness and connectors. Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out, or corroded terminals.

   Visually inspect the Right Rear Wheel Speed Sensor, connector and tone wheel for damage and correct installation.

   Are there any visible Sensor, connector or tone wheel concerns? 

   Yes 

   1. Correct the sensor, connector or tone wheel concerns as necessary.
   2. Perform ABS VERIFICATION TEST .

   No 

   1. Go to step  2).
2. 2)   MONITOR ALL WHEEL SPEED SENSORS WITH THE DRB III®
   Fig 1: Connecting Scan Tool & Turning Ignition On

   Courtesy of DAIMLERCHRYSLER CORP.

   With the DRB III®, erase DTCs.

   Start the engine.

   With an assistant to drive, use the DRB III® to monitor all wheel speed sensors. Slowly accelerate as straight as possible from a stop to 24 km/h (15 MPH).

   Is the Right Rear Wheel Speed Sensor Signal 0 or differing from others by more than 5 km/h (3 MPH)? 

   Yes 

   1. Replace the Right Rear Wheel Speed Sensor. (Refer to BRAKES/ELECTRICAL/FRONT WHEEL SPEED SENSOR - REMOVAL) .
   2. Perform ABS VERIFICATION TEST .

   No 

   1. Inspect and repair the related wiring harness for a possible intermittent condition.
   2. Perform ABS VERIFICATION TEST .